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Mechanical / Electrical Engineers

300 UNICORN PARK DRIVE, WOBURN, MA 01801 (P) 781.481.0210 (F) 781.481.0203 (W) www.f-t.com

Mechanical / Electrical Basis of Design Narrative

Surgical Services Addition and Renovations

Prepared For:

Brattleboro Memorial Hospital

Brattleboro, VT 05301

September 24, 2015

updated February 3, 2016

F&T Project No. 150030.01

Prepared By:

Fitzemeyer & Tocci Associates, Inc.

300 Unicorn Park Drive, 5th Floor

Woburn, MA 01801

781.481.0210 | 781.481.0203



1. Project Description ................................................................................................................................... 1

1.1. General ........................................................................................................................................ 1

2. Mechanical / Electrical Systems Executive Summary ............................................................................. 1

2.1. Fire Protection ............................................................................................................................. 1

2.2. Plumbing ...................................................................................................................................... 1

2.3. HVAC ........................................................................................................................................... 2

2.4. Electrical ...................................................................................................................................... 2

3. Fire Protection Systems ........................................................................................................................... 2

3.1. System Description ...................................................................................................................... 2

3.2. Materials ...................................................................................................................................... 3

3.3. Proposed Manufacturers ............................................................................................................. 3

4. Plumbing Systems ................................................................................................................................... 3

4.1. Domestic Water Systems ............................................................................................................ 3

4.2. Sanitary Drainage and Venting Systems ..................................................................................... 4

4.3. Storm Drainage Systems ............................................................................................................. 4

4.4. Special Drainage and Venting Systems ...................................................................................... 4

4.5. Medical Gas and Vacuum Systems ............................................................................................. 4

4.6. Propane Gas Systems ................................................................................................................. 5

4.7. Reverse-Osmosis Water Systems ............................................................................................... 5

4.8. Plumbing Fixtures ........................................................................................................................ 5

4.9. Materials ...................................................................................................................................... 6

4.10. Proposed Manufacturers ............................................................................................................. 6

5. HVAC Systems ........................................................................................................................................ 6

5.1. Design Criteria ............................................................................................................................. 6

5.2. Heating ........................................................................................................................................ 7

5.2.1. Steam .......................................................................................................................................... 7

5.2.2. Boiler Feed System ..................................................................................................................... 7

5.2.3. Fuel System ................................................................................................................................. 8

5.2.4. Hot Water ..................................................................................................................................... 8

5.3. Primary Cooling ........................................................................................................................... 8

5.4. Humidification .............................................................................................................................. 8

5.5. Air Handling ................................................................................................................................. 9

5.6. Supply Air Distribution System .................................................................................................. 11

5.7. Return Air System ...................................................................................................................... 12

5.8. Zoning ........................................................................................................................................ 12

5.9. General Exhaust Systems ......................................................................................................... 12

5.10. Specialized Exhaust Systems ................................................................................................... 12



5.11. Automatic Temperature Controls ............................................................................................... 13

5.12. Materials .................................................................................................................................... 13

5.13. Proposed Manufacturers ........................................................................................................... 13

6. Electrical Systems .................................................................................................................................. 14

6.1. General ...................................................................................................................................... 14

6.2. Electrical Service – Normal ....................................................................................................... 14

6.3. Electrical Service – Essential .................................................................................................... 14

6.4. Grounding .................................................................................................................................. 15

6.5. Lightning Protection System ...................................................................................................... 15

6.6. Wiring Methods .......................................................................................................................... 16

6.7. Lighting ...................................................................................................................................... 17

6.8. Fire Alarm System ..................................................................................................................... 18

6.9. Master Clock System ................................................................................................................. 19

6.10. Nurse Call System ..................................................................................................................... 19

6.11. Paging / Public Address System ............................................................................................... 19

6.12. Raceway Support System ......................................................................................................... 20

6.13. Proposed Manufacturers ........................................................................................................... 20



1. Project Description

1.1. General

The proposed addition to the Brattleboro Memorial Hospital consists of a 4-story 33,000 square foot new construction addition in the approximate location of the existing Pavilion Building portion of the facility. The ground floor of the addition is intended to contain CSR and surgical supports spaces as well as a cardiac rehab suite. The first floor of the addition is intended to contain 3 Operating Room suites, sterile core and associated support spaces. The second and third floors are planned to medical office suites.

The renovations consist of modifications to approximately 12,000 square feet of existing inpatient space on the first floor, with renovations to PACU, prep/recovery, Endoscopy, and surgical support areas. The medical office suites will occupy the 1st and 2nd levels and will include primary care exam, treatment, rehabilitation, pharmacy as well as associated administrative, waiting and support spaces.

Existing utilities serving the Richards Building and the West-Wing are routed via the ground floor corridor that is proposed to be demolished and re-built. The existing utilities shall be removed and replaced as required to accommodate this work.

The building, like the rest of the existing hospital facility, is expected to operate approximately 24 hours / day, seven days / week. The operation of the addition’s second and thirds floors may have more limited hours consistent with outpatient type services.

Base infrastructure building utilities shall be provided by the proposed campus plant.

The project shall be designed to comply with the requirements of the FGI Guidelines for Healthcare Design and Construction, applicable state and local codes and facility standards.

2. Mechanical / Electrical Systems Executive Summary

2.1. Fire Protection

A complete wet-pipe automatic sprinkler fire protection system shall be provided for the addition, including a new standpipe system, extended from the existing building fire service entrance. The existing hospital facility water service shall support the flow requirements of the addition sprinkler system and hose valves. The existing fire protection systems serving the areas of the building proposed to be renovated are adequate in capacity and shall remain in service, with required modifications and / or extensions to support new space function and layout. No additional fire pump requirement is currently anticipated for the building. Coverage throughout the building shall be designed to fully comply with the requirements of NFPA 13 & 14 and the Owner’s Insurer (Factory Mutual Global).

2.2. Plumbing

Complete domestic water, sanitary drainage and venting, storm drainage, medical gas and vacuum and propane gas systems shall be provided for the addition. The domestic water system, supported by an extension of the existing building municipal water service, shall consist of cold, hot and re-circulation piping systems. Domestic hot water shall be provided via steam-fired instantaneous water heating equipment. New sanitary drainage and storm water drainage systems shall be provided to support the proposed addition; piping below grade shall be extended from and tie into the associated site locations. Existing domestic water, sanitary drainage and venting and storm drainage systems serving the areas of the building proposed to be renovated are adequate and shall remain in service, with required modifications and / or extensions to support new space function and layout. Liquid



propane gas shall be extended from the existing building propane tanks to support the building’s equipment gas requirements. Centralized medical air, oxygen and medical vacuum systems, supported by extensions of the existing building systems, respectively, shall be provided with associated master, local and area alarms and zone boxes. The existing nitrogen system shall be upgraded to support the existing facility and the requirements of the addition and renovation. All systems shall be designed to fully comply with the requirements of NFPA 99 & NFPA 55, the 2014 FGI Guidelines for Healthcare Design & Construction, and all applicable local and state codes and regulations. Plumbing fixtures shall be provided that meet current Energy Policy Act and Efficiency of Vermont water conservation requirements and are consistent with facility standards.

2.3. HVAC

The boiler plant will be renovated with new boilers, a fuel system and ventilation systems. The boiler plant renovation will be phased to minimize down times to the steam system. A new stand-alone boiler system will be provided for central sterile process loads. A new hot water heat exchanger and pumping system will be provided to serve the reheat needs for the new addition. An existing 177 ton chiller will be removed and replaced with a new 270 or 300 ton air cooled roof mounted chiller.

Complete supply, return, exhaust, hot water heating and three new air handling systems shall be provided for the addition and renovation areas. The existing air handler serving the operating rooms and central sterile will be replaced with a new unit to serve the new PACU, ACU and endoscopy areas as well as the existing support areas not in scope. Automatic control systems shall be supported by a direct digital control based building automation system.

All areas within the building shall be provided with systems designed to comply with the 2010 FGI Guidelines for Healthcare Design and Construction and applicable local and state codes and regulations.

2.4. Electrical

The proposed addition and renovation areas shall be served from the existing building’s electrical distribution infrastructure. Normal power and essential/emergency power shall be provided by the existing switchboard in the main electrical room and the recently upgraded essential electrical distribution equipment, also location in the main electrical room. New normal and emergency panelboards and branch distribution shall be provided for service to loads throughout the new addition. Emergency distribution shall be separated into critical, life safety, and equipment branches, and this equipment located in dedicated emergency electric closets. New normal and emergency power distribution shall support all power, lighting, and equipment requirements. Lighting systems shall be energy efficient LED type fixtures and provided with automatic relay control, and occupancy sensing controls (where appropriate). Low voltage systems shall include new fire alarm, security, nurse call systems, and telephone and data infrastructure systems.

All areas within the building shall be provided with systems designed to comply with the FGI Guidelines for Healthcare Construction, NEC 2014 Edition, NFPA 99 Health Care Facilities Code, and Efficiency Vermont energy conservation standards. Fixtures and devices throughout shall be designed as appropriate for the space function and population.

3. Fire Protection Systems

3.1. System Description

A complete wet-pipe automatic sprinkler fire protection system shall be provided. The new sprinklers and piping shall be configured as a combination automatic wet sprinkler / Class I manual standpipe system with fire hose valves in each stairwell as required by the Brattleboro Fire Department.



An approximately 150 foot main shall be extended from the existing fire protection water service which enters at the north side of the main building. Concealed sprinklers shall be provided throughout the building, except in any area to be constructed without a ceiling, where upright sprinklers shall be provided. Sidewall sprinklers shall be provided at elevator shafts and also as required. No new fire department connection requirement is anticipated for the building.

Based on the proposed building configuration and the available water supply at the building water entrances (2010 data), no fire pump requirement is anticipated for the addition. The standpipe is required per the 2009 IBC. NFPA 14 allows non-high rise buildings to have manual wet standpipes, relying upon the fire department pumper as the source of flow and pressure, in lieu of a fire pump. Factory Mutual Data Sheet 4-4N, which requires automatic standpipes, is not applicable to the proposed building configuration (less than five stories).

An existing sprinkler main serving the Richards Building is routed via the ground floor corridor that is proposed to be demolished and re-built. The existing main shall be removed and replaced, with the appropriate expansion joints. During construction, temporary sprinkler water service to the Richards Building shall be maintained.

Distribution of sprinkler heads shall generally be based on Light Hazard and Ordinary Hazard criteria, as applicable based on space function, in accordance with NFPA 13. Quick-response sprinklers shall be used to the maximum extent possible. Design densities shall be as directed by NFPA, FM Global, and the Brattleboro Fire Department.

All spaces shall have sprinkler protection. The fire protection system shall be hydraulically designed, furnished and installed by the fire protection subcontractor. The engineer shall prepare design drawings and hydraulic calculations, suitable to obtain a building permit. Working drawings shall be provided by the fire protection subcontractor showing all sprinklers and piping, stamped by a registered professional engineer and forwarded to the local fire department for approval.

3.2. Materials

Piping above ground:

Black steel pipe: Schedule 40, ASTM A53, threaded and / or grooved joint fittings; minimum working pressure 200 PSI.

Thin-wall black steel pipe: ASTM A 135 or ASTM A 795/A 795M, threadable, with wall thickness less than Schedule 30 and equal to or greater than Schedule 10.

3.3. Proposed Manufacturers

Sprinklers: Viking; Tyco; Reliable; approved equal.

Alarm Valve & Trim: Viking; Reliable; Automatic Fire Protection Corp.; approved equal.

Piping: Allied; Wheatland; Central; approved equal.

Flow and Supervisory: McDonnell; Autocall; Potter Romer; approved equal.

4. Plumbing Systems

4.1. Domestic Water Systems

A complete domestic water system shall be provided at the addition, extending to all fixtures and equipment requiring hot and / or cold water. The system shall consist of a 2” cold water main extended from the adjacent existing hospital building, with dedicated meter. No new water treatment requirement is anticipated.

Domestic hot water heating at the addition shall be provided via two steam-fired instantaneous water heat exchangers, located within the 1st floor mechanical space above the boiler room. Multiple thermostatic mixing valves shall be provided to regulate hot water temperature as applicable to the



associated equipment. The water heaters shall have an individual 10 GPM capacity. Hot water circulation pumps are anticipated to be 2 GPM @ 25’ of head each in a lead / lag configuration. The domestic water piping and circulation system shall support all plumbing fixtures and equipment requiring domestic water. The anticipated HW load would require a 1” main piping distribution throughout the space.

Make-up water for HVAC applications and any other potentially contaminated service shall be provided with a local backflow preventer.

Existing domestic water systems serving the areas proposed to be renovated shall be modified and extended as required.

Piping shall be sized based on fixture units and velocity within the pipe. Water velocity shall not exceed 8 feet / second. Cold water piping shall be insulated with 1/2” thick insulation. Hot water and re-circulation piping shall be insulated with 1” insulation, or as required by local energy code.

4.2. Sanitary Drainage and Venting Systems

A complete sanitary drainage and venting system shall be provided at the addition, extended and connected to all fixtures and equipment as required. The system shall extend 5’ from the building foundation wall prior to connecting to the site sanitary sewer. Venting shall terminate through the roof at multiple locations. In-direct sanitary drainage connection and cool down shall be provided for any water discharge above 140°F.

Based on the proposed building configuration and adjacent site conditions, no ejector pump requirement is anticipated for the addition.

Existing sanitary drainage and venting systems serving the areas proposed to be renovated shall be modified and extended as required.

4.3. Storm Drainage Systems

A complete storm drainage system shall be provided at the addition, extended and connected to all roof drains. The system shall extend 5’ from the building foundation wall prior to connecting to the site drainage sewer.

Horizontal storm drainage piping shall be insulated with 1” thick insulation. Vertical piping risers shall not be insulated.

Based on the proposed configurations locating the renovation areas multiple levels below the roof, no requirement for modification / extension of the existing storm drainage systems serving the areas proposed to be renovated is anticipated.

4.4. Special Drainage and Venting Systems

No requirement for special drainage and venting is anticipated to be required.

4.5. Medical Gas and Vacuum Systems

A complete medical air system shall be provided at the addition, extended from the existing medical air source equipment located in the facility mechanical room. The piping system shall be extended and connected to all valve boxes and medical air outlets, per NFPA 99 requirements.

A complete oxygen system, located on site, shall be provided at the addition, per NFPA 55 requirements, extended from the existing bulk oxygen storage equipment located on site and distributed within the existing facility. The piping system shall be extended and connected to all valve boxes and O2 outlets, per NFPA 99 requirements.



A complete medical vacuum system shall be provided at the addition, extended from the existing medical vacuum equipment located in the facility mechanical room. The piping system shall be extended and connected to all valve boxes and medical vacuum inlets, per NFPA 99 requirements.

Existing medical air, oxygen and medical vacuum mains serving the Richards Building are routed via the ground floor corridor that is proposed to be demolished and re-built. The existing mains shall be removed and replaced, with the appropriate expansion joints. During construction, temporary medical gas and vacuum service to the Richards Building shall be maintained.

A complete instrument air system shall be provided, via a 7.5 hp duplex base-mounted system with a 120-gallon storage tank. Reserve cylinders shall be provided for at least one hour of operation. The piping system shall be extended and connected to all valve boxes and instrument air outlets, per NFPA 99 requirements.

A complete waste anesthetic gas disposal system shall be provided, via an oil-less 2 hp claw duplex system with a 60-gallon storage tank. The piping system shall be extended and connected to all valve boxes and WAGD inlets, per NFPA 99 requirements.

Complete nitrogen and nitrous oxide systems shall be provided at the addition, extended from the existing nitrogen tank manifold area located in the facility tank room. Currently, the manifolds’ capacities are adequate for the facility; however the condition of the equipment is marginal. Each manifold shall be replaced as required to maintain capacity to meet the requirements of the existing facility and the proposed addition and renovations. The piping system shall be extended and connected to all valve boxes and N2 and N2O outlets, per NFPA 99 requirements.

A complete carbon dioxide system shall be provided, via 2 x 2 high-pressure cylinder manifolds. The piping system shall be extended and connected to all valve boxes and CO2 outlets, per NFPA 99 requirements.

Existing medical air, oxygen, medical vacuum, nitrogen and nitrous oxide piping distribution systems serving the areas proposed to be renovated shall be modified and extended as required.

Master alarm panels shall be provided at Recovery and Prep for system monitoring. Area alarm panels shall be provided with each zone valve box for distribution monitoring. Medical gas outlets shall be quick-connect type.

4.6. Propane Gas Systems

Existing propane gas piping distribution systems serving the existing boiler room shall be modified and extended as required to suit the new burner equipment.

4.7. Reverse-Osmosis Water Systems

A reverse-osmosis water generator skid shall be provided with supply and return loop piping extended to sterilization and humidification equipment as required. The skid shall be located in a lower level mechanical space.

4.8. Plumbing Fixtures

Plumbing fixtures shall be provided at the addition and renovation areas complete with all trim, accessories and necessary piping connections. Fixture types and operators shall be consistent with FGI Guidelines, local and other applicable codes and facility standards.

In general, fixtures shall be provided as required by the architectural layout:

Clinical exam / treatment and support (lab) spaces shall be provided with stainless steel counter sinks with gooseneck faucets and wrist blade operators.

Toilet rooms shall be provided with vitreous china water closets and lavatories with gooseneck faucets and wrist blade operators.

Scrub sinks with electronic faucets shall be provided for operating rooms.



Soiled utility spaces shall be provided with flushing rim sinks and eyewash stations.

Housekeeping spaces shall be provided with floor-mounted mop sinks.

Floor drains shall be provided with automatic trap primers.

4.9. Materials

Piping:

Domestic water: Type L copper, hard drawn, solder fittings; full port, ball type, solder end fixture isolation valves.

Sanitary waste and venting, 2-1/2” and larger, above grade: Hubless cast-iron.

Sanitary waste and venting, 2” and smaller, above grade: Cast-iron or type L copper, threaded or solder fittings.

Sanitary waste and venting, below grade: Hub and spigot.

Storm drainage, above grade: Service weight hubless cast-iron, four-band (minimum) heavy-duty clamp / gasket mechanical joints.

Storm drainage, below grade: Service weight hub and spigot cast-iron, rubber seals.

Propane gas: Schedule 40 black steel, ASTM A53, shop-applied pipe coating on exterior installations only.

Reverse-osmosis water: Stainless steel, threaded fittings.

Medical gas: Type L copper, pre-washed and sealed, brazed fittings.

Equipment air: Type L copper, wrought copper fittings and 95-5 lead-free solder fittings.

Medical vacuum & WAGD: Type L copper, pre-washed and sealed, brazed fittings.


Toilets: Toto; American Standard; Kohler; approved equal.

Flush Valves: Toto; Delaney; Sloan; approved equal.

Sinks: Just; Elkay; Opella; approved equal.

Faucets: Chicago; Delta; Toto; approved equal.

Eyewash: Guardian; Haws; Speakman; approved equal.

Floor Drains: JR Smith; Wade; Mifab; approved equal.

Roof Drains: Froet; JR Smith; Wade; approved equal.

Valves: Apollo; Watts; Nibco; approved equal.

Backflow Preventers: Apollo; Watts; Febco; approved equal.

Showers: Aquatic; Aqua Bath; Aquarius; approved equal.

Water Heaters: Patterson Kelly; PVI; approved equal.

Medical Gas and Vacuum: Beacon Medaes; Allied; Amico; approved equal.

5. HVAC Systems

5.1. Design Criteria

The ambient outdoor design criteria will be based on the W.H. Morse State Airport data as follows:

Summer Cooling (0.4%): 86.0° DB, 72.3°F WB

Summer Dehumidification (0.4%): 79.8°F DB, 74.6°F WB

Winter Heating Design (99.6%): -4.4°F DB

Winter Humidification (99.6%): -2.0°F DB, -3.5°F WB

The indoor design criteria will be as follows:

Room Type Summer Winter



°F % °F %

Recovery 72 50 70 30

Operating Rooms 64 50 64 30

Procedure 72 50 70 30

Sterilization 72 50 70 30

All Other 72 50 70 *

*All other spaces will have no winter humidification

5.2. Heating

5.2.1. Steam

Primary heating at the building is currently generated at the existing boiler plant. Three (3) oil fired fire tube boilers provide high pressure (75psig) steam which is used for heating and process loads throughout the campus. One boiler is a 100 BHP Cleaver Brooks model and two are 150 BHP Kewanee models. Currently the hospital is phasing out the steam fed clothes dryers which is anticipated to be removed from the boiler system prior to the project starting. The steam serving the central sterile area is also being removed from the main boiler plant as part of the project. Elimination of these two loads would remove the requirement for high pressure steam from the facility and therefore we propose that the new boilers would be low pressure steam.

The anticipated load of the boiler plants including the new surgery addition is 300 BHP therefore our recommendation is to provide three (3) new 200 BHP fire tube boilers during two separate phases. This will allow two boilers to operate as the duty with excess capacity and one as the standby for full redundancy. Each boiler will have an 8:1 turndown for an operational turndown of 16:1.

The anticipated load of the boiler plants including the new surgery addition is 300 BHP therefore our recommendation is to provide three (3) new 200 BHP, no. 2 oil-fired, fire-tube boilers during two separate phases. This will allow two boilers to operate as the duty with excess capacity and one as the standby for full redundancy. Each boiler will have an 8:1 turndown for an operational turndown of 16:1.

It is estimated that the Dunham building requires 280 lbs/hr of low pressure steam and therefore the recently replaced 2” underground line is sufficient to keep serving the building.

The Richards building line is in the way of the new addition and will be replaced with an appropriately sized line during that period of construction.

The existing low pressure steam and low pressure condensate lines in the ground floor corridor will be reworked to support the renovations to the corridor.

5.2.2. Boiler Feed System

The recently installed deaerator has a capacity of 15,000 lbs/hr which exceeds the 13,800 lb/hr (400 BHP) load anticipated at the completion of the renovations. The load, however, will exceed the recommended storage capacity of the deaerator and therefore a new 300 gallon surge tank will be provided. The addition of a surge tank will also ensure that a constant flow of water is being supplied to the deaerator and provide smoother operation.

Two new boiler feed pumps on VFD’s in a duty-standby configuration would be provided for the new boilers, however possible re-use of the recently replaced pumps will be examined.

The existing condensate receiver will be maintained.



5.2.3. Fuel System

The existing No. 4 fuel oil system including the pumps and heaters will be removed and replaced with a No. 2 fuel oil system. The oil tanks will be drained and cleaned.

It may be possible to convert the 100 BHP boiler to No. 2 fuel oil during Phase 1 and thus allow the immediate removal of the existing fuel oil pump set and permit drain down and cleaning of both fuel oil tanks simultaneously. The cost and feasibility of this is being investigated.

5.2.4. Hot Water

Steam is also used to generate heating hot water. The renovation area currently utilizes hot water for all reheating needs. The existing heat exchanger serving the renovation area is located in a second floor mechanical room and has 4” supply and return piping feeding the existing building. The heat exchanger and circulating pumps provide 195 GPM of 50% propylene glycol water at 180-160°F.

The existing heating hot water system will be reconfigured to serve the ACU/PACU new VAV boxes. The system will also be extended to serve the new Endoscopy suite VAV reheats and the replacement unit AHU-2.

A new hot water heating system will be provided to serve the addition. A mechanical room on the ground floor, adjacent to the boiler plant, will be provided. The plant will consist of redundant shell and tube heat exchangers, redundant circulating pumps, an air separator, expansion tank and chemical feeder. It is anticipated that the system will be 150 GPM.

5.3. Primary Cooling

The existing building is served by two air cooled, roof mounted chillers. CH-1 was recently replaced and has a capacity of 225 tons. CH-2 is 20 years old and has a capacity of 177 tons. It is understood from discussions with facility staff that only one chiller is required to operate to meet the current cooling load, giving the plant partial redundancy. The renovation net add to the chilled water system is anticipated to be 15 tons plus another 30 tons for the kitchen coil replacement project for a total of 45 tons. This will raise the peak chiller demand to 270 tons. A new roof mounted air cooled screw chiller will replace CH-2 to provide capacity to meet the new loads. The first option is a 270 ton (nominal 290 ton) chiller which will meet the load with no reserve capacity. The second option is a 300 ton (nominal 330 ton) chiller which will meet the load and have an extra 10% (30 tons) of capacity for future expansion to the chilled water system.

The new chiller will feature dual refrigerant circuits, each powered separately. One circuit will be on standby power.

Chilled water supply and return pipe branches from the loop shall be extended to the new addition roof. All controls shall be on the building’s emergency power system. The major chilled water mains going to the new addition roof are estimated to be 4” with 2” thick fiberglass or cellular insulation.

The 3” chilled water supply and return pipes in the ground floor corridor will be reconfigured to support the renovations to the corridor.

AHU-1 will have a DX cooling coil and companion condensing unit to serve as the dehumidification coil. The condensing unit will be an air cooled unit located near the air handler. The condensing unit is anticipated to be 35 tons.

5.4. Humidification

All scope areas will be humidified. Each air handler will have a steam-to-steam humidifier utilizing plant steam to generate steam for distribution. There will be no plant steam directly injected into the airstream.



Areas requiring humidification beyond the 30% RH that the air handlers will provide will have local electric ionic bed type humidifiers. The generator cabinet will be wall mounted adjacent to the space and will feed duct mounted dispersion tubes.

5.5. Air Handling

Cooling, ventilation, and ventilation air pre-heating shall be provided by three (3) air handling units located on the roof; two on the new addition roof and one on the existing OR roof. The air handlers shall be hospital-grade units with durable components.

The recovery and endoscopy unit, AHU-1, shall have the following characteristics:

Dedicated to first floor endoscopy suite, recovery area and areas currently served by AC-1 not being renovated.

7,000 CFM supply/return air flow

Semi-Custom Unit

2.5” external static pressure supply and 2” external static pressure return performance.

Variable air volume.

33% outside air.

All sections welded-frame, double-wall, aluminum exterior, aluminum interior, 2” foam insulated panel construction with thermal breaks. Exterior surface shall be factory painted.

Stainless steel drain pans and coil racks

Interior drains in all sections.

Factory-mounted and -wired disconnect switches.

Factory-wired interior and service lights and receptacles.

Premium efficiency motors.

Variable speed drives for individual control of all fans.

Access doors and windows in all sections.

Airflow measuring stations (supply, return, and outside air).

Filter bank differential pressure gauges.

Fully redundant supply and return fans with plenum dividers.

Ultra-low-leakage dampers.

Duct smoke detectors (supply and return).

30% efficient, MERV 8 pleated pre-filters.

90% efficient, MERV 14 cartridge final filters.

Hot water heating coils.

Chilled water hydronic cooling coils.

UV lights for cooling coils

Steam-to-steam humidifier

Discharge Plenum.

Air handler and controls shall be on emergency power.

Estimated footprint: 7’-2” W x 40’ L x 4’-6’ H (not including support).

Estimated weight 9,500 lbs

The operating room suite air handling unit, AHU-2, shall have the following characteristics:

Dedicated to three OR’s and support spaces on first floor and central sterile on ground floor


Custom Unit

3.0” external static pressure supply and 2.5” external static pressure return performance.


20% outside air.










Internally spring isolated fans.








90% efficient, MERV 14 cartridge mid-filters.

99% efficient, HEPA final filters.



DX dehumidification coil with companion air cooled condensing unit.



Discharge Plenum.


Estimated footprint: 7’-2” W x 52’-10” L x 5’-4” H (including ACCU, not including support).

Estimated weight 18,000 lbs (including 4,400 lb ACCU)

The medical office unit, AHU-3, shall have the following characteristics:

Dedicated to ground floor cardiac gym, second floor MOB and third floor MOB


Semi-Custom Unit

3.0” external static pressure supply and 2” external static pressure return performance.


33% outside air.

















90% efficient, MERV 14 cartridge final filters.





Discharge Plenum.


Estimated footprint: 7’-2” W x 43’-3” L x 5’-4” H (not including support).

Estimated weight 8,900 lbs

5.6. Supply Air Distribution System

New supply air ductwork shall generally be galvanized steel and insulated with 2” thick fiberglass duct insulation. Stainless steel ductwork shall be used for service to operating and procedure rooms as well as up and down stream of duct mounted humidifiers. Medium pressure supply air ductwork between the air handler and the VAV terminal boxes shall be rated for 6” wg pressure class service. Supply air ductwork downstream of VAV terminal boxes (low pressure) shall be rated for 2” wg service.

Pressure independent variable air volume (VAV) terminal boxes with hot water reheat coils shall be provided for air flow, space pressure and temperature control. All VAV boxes shall be single inlet type with hospital grade lining and factory sound attenuators.

VAV terminal boxes serving areas such as offices, corridors, lounges and staff areas shall operate in variable volume fashion with airflow modulating in response to the thermal load within the space. Minimum air flow rate shall be defined as the minimum flow required for compliance with building code minimum ventilation air flow.

VAV terminal boxes supporting patient general care areas shall operate in variable volume fashion with airflow modulating in response to the thermal load within the space. Minimum air flow rate shall be defined as the minimum flow required for compliance with ASHRAE 170 criteria. The following are applicable minimum air exchange and ventilation rate requirements for the typical project spaces:

Space Name Min. Total ACH

Min. Vent. ACH

Pressurization

Laboratory 6 2 Negative

Treatment Room 6 2 Neutral

Exam Room 6 2 Neutral

OR 25 5 Positive

Patient / Obs. Room 6 2 Neutral

Endo/Procedure Room 15 3 Positive

Endoscopy Cleaning 10 NA Negative

Soiled Utility 10 2 Negative

Clean Workroom 4 2 Positive

Toilet Room 10 NA Negative

Housekeeping 10 NA Negative

Mechanical 6 2 Neutral

Storage/Closet NA NA Neutral

Server 2 NA Neutral

Office 4 2 Neutral



Conference 4 2 Neutral

Corridor 4 2 Positive

Space pressure relationships shall be maintained by balancing in all areas. Procedure and isolation room spaces shall be provided with space pressurization monitors. Critical care spaces requiring precise pressure relationships shall be automatically controlled (see return air system description below for additional information).

In most areas the ceiling diffusers are anticipated to be 2’x2’ and to lay in the acoustic tile ceiling grid. Common spaces such as lobbies, waiting areas and corridors may have specialized diffusers / grilles to meet the requirements of the architecture. Procedure room areas shall be provided with specialized diffuser / grille systems.

O.R. areas shall be provided with factory-built Cleansuite ceiling systems.

5.7. Return Air System

A complete ducted return air system shall be provided. A low-velocity insulated galvanized sheetmetal duct system shall run throughout the building and connect from the wall / ceiling or duct-mounted grilles in each space to the return air mains. Return air ductwork serving procedure rooms or operating rooms will be stainless steel. The return air ductwork system shall be constructed to 3” wg pressure class service. Return air ductwork serving areas with potentially high humidity and / or low space temperatures (terminal humidification areas) shall be provided with 1-½” fiberglass duct insulation due to the potential for condensation to form on the ductwork.

Areas requiring pressurization control such as operating rooms and procedure rooms shall have return variable air volume boxes to control room pressure.

5.8. Zoning

Each temperature control zone will have a separate VAV box based on the following criteria:

Interior and exterior spaces shall be zoned separately.

Exterior spaces with multiple exposures shall be zoned separately.

No more than 500 sf per zone for interior spaces.

Offices shall be zoned separately from Patient Care areas.

No more than 3 private offices shall be zoned together.

No more than 4 like patient spaces shall be zoned together.

All critical care spaces shall be zoned separately.

Areas shall be zoned by department. Spaces in different departments shall not be zoned together.

5.9. General Exhaust Systems

A complete ducted system shall be provided to exhaust bathrooms and housekeeping areas. A low-velocity insulated galvanized sheetmetal duct system shall run throughout the building and connect from the wall / ceiling or duct-mounted grilles in each space to the exhaust air mains and to rooftop exhaust fans. The exhaust air ductwork system shall be constructed to 3” wg pressure class service.

EF-1 will serve the toilet rooms associated with AHU-2. It will be approximately 200 CFM.

EF-2 will serve the toilet rooms associated with AHU-3. It will be approximately 1200 CFM.

5.10. Specialized Exhaust Systems

Areas performing specialized procedures and as required by the FGI guidelines shall be provided with individual dedicated exhaust systems. Equipment such as fume hoods, bio-safety cabinets, and chemical storage cabinets, etc. are expected to require dedicated exhaust systems.



EF-3 will be dedicated to the endoscopy scope cleaning room. It will be approximately 250 CFM.

EF-4 will be dedicated to the central sterilizer. It will be approximately 800 CFM.

5.11. Automatic Temperature Controls

The entire system shall be controlled by a Direct Digital Control building automation system. The control system shall provide the primary function of temperature control throughout the facility. In addition, the system shall allow for problems to be identified. Alarms, scheduling and troubleshooting may take place at a remote location. Facility staff may monitor, troubleshoot and adjust the HVAC system, solving many problems remotely. A new campus front end shall be provided at the facility office.

5.12. Materials

Piping:

Piping 2-1/2” and larger: Schedule 40 welded steel, welded steel fittings, iron valves.

Piping 2” and smaller: Type L copper, soldered fittings, threaded bronze valves.

Ductwork:

ASTM A525 galvanized steel sheet, lock forming quality, zinc coating of 1.25 oz per sq ft for each side in conformance with ASTM A90.

ASTM A167 316 Stainless steel sheet, 22 gauge annealed finish.

Fabricated in accordance with SMACNA pressure class 6 duct standards for medium-pressure supply, class 2 for low-pressure supply, and class 3 for return and exhaust systems.

Identification:

Piping shall be labeled per ASME A13.1, "Scheme for the Identification of Piping Systems," for letter size, colors, length of color field and viewing angles of identification devices for piping.

Ductwork shall be labeled with plastic duct tape markers.

Equipment shall be labeled with engraved plastic laminated equipment placards.


Air Handlers: Haakon; Trane; York; approved equal.

Pumps and Accessories: B&G; Armstrong; Taco; approved equal.

VAV Terminals: Titus; MetalAire; JCI/Envirotech; approved equal.

Humidifiers: Armstrong; Nortec; Dri-steem; approved equal.

Diffusers / Grilles: Titus; MetalAire; Krueger; approved equal.

Fans: Greenheck; Cook; Penn; approved equal.

Terminal Heating Units: Sterling; Airtherm; approved equal.

Controls: JCI; Honeywell; approved equal.



6. Electrical Systems

6.1. General

Electrical work consists of an underground electrical service from the existing normal and emergency electrical distribution systems , normal and essential power panelboards, branch circuits, lighting, fire alarm, and low-voltage system components. The electrical system throughout the building shall be in compliance with NEC Article 517 Health Care Facilities and the FGI Guidelines for Healthcare Design and Construction, NFPA 99 Health Care Facilities Code, and Vermont State Department of Health requirements.

6.2. Electrical Service – Normal

Normal electrical service shall be provided underground from a new 208Y/120 Volts, 3-phase, 4-wire feeder from the existing normal distribution system.. Preliminary calculations have determined the service required for the new addition is 600Amps, at 208Y/120 Volts, 3-phase, 4-wire. . Power shall be distributed throughout the building from a 600 Amp, 208Y/120 Volts, 3-phase, 4-wire distribution panel to be located on the ground floor. 208Y/120 Volts, 3-phase, 4-wire panelboards shall be fed from the switchboard for the normal electrical system. Two 100A, 42-pole panelboards shall be provided for the ground floor; one for the rehab area and one serving central sterile. One 100A, 42-pole panelboard shall be provided for the 1st floor. One 200A, 84-pole panelboard shall be provided for each of the 2nd and 3rd floors.

6.3. Electrical Service – Essential

The essential electrical system shall consist of a 208Y/120 Volts, 3-phase, 4-wire feed from the existing emergency distribution system and connected to new emergency power distribution panels located in the new emergency electric room. The emergency distribution panel shall provide essential power to downstream distribution panels located in the ground floor. The essential power system shall be separated into life safety, critical, and equipment branches. A distribution panel shall be provided for each branch of the emergency electrical system, and these distribution panels shall feed 208Y/120 Volts, 3-phase, 4-wire panels throughout the addition that serve the branch circuit requirements. The distribution panels shall be sized as follows, which includes new circuit breakers installed in existing main distribution panels (in the main electric room) and feeders to serve the new panels:

Life Safety - 100 Amps

Critical - 400 Amps

Equipment - 1000 Amps The life-safety panelboard shall serve branch circuits of that system for all floors of the addition. For the critical branch, panelboards shall be located as follows. One 200A, 84-pole panelboard shall be provided to serve the ground floor (both rehab & central sterile). One 200A, 84-pole panelboard shall be provided to serve the 1st floor. One 100A, 42-pole panelboard shall be provided to serve both the 2nd and 3rd floors. For the equipment branch, the distribution panel on the ground floor shall serve the majority of the major loads in the addition, including;

New air handlers (qty 3, including new AHU on existing roof)



New mechanical equipment in ground level mechanical room; a 400A panelboard shall be provided in the mechanical room to serve this equipment

New central sterile equipment; a 400A panelboard shall be provided to service this equipment The essential electrical distribution infrastructure shall be separated from the nonessential, normal electrical distribution equipment and be installed within a 2 hour rated room. The HVAC equipment shall be served from equipment branch panelboards and distribution panelboards. The replacement chiller requires two feeds from the existing main electric room. For the 270T chiller option; the existing feeders may be re-used to serve the new unit and the existing circuit breakers shall be replaced with new (qty 1) and upgraded (new trip unit, qty 1). For the 300T chiller option; the existing feeders may be re-used to serve the new unit and the existing circuit breakers shall be replaced with new (qty 2). The existing feeder conductors shall be inspected and tested to confirm suitability for re-use. Provide alternate pricing for two new complete feeders in the event that the existing feeders are determined to be in poor condition and require replacement. Essential electrical system feeders shall be of a listed electrical circuit protective system with a minimum 2-hour fire rating (i.e. MI Cable) as required by the NEC Article 700. All operating rooms shall be provided with two (2) 7.5 kVA isolation power panels, each fed from one critical branch of the essential power system. Operating rooms shall be considered to be a wet procedure location, necessitating special protection against electric shock (i.e. isolated power systems). Each isolated power system shall be provided with a continually operating line isolation monitor that indicates total hazard current and is readily visible to indicate when the system is and is not adequately isolated from ground.

6.4. Grounding

Additional grounding shall be added for the new addition to supplement, and tie into, the existing grounding system; and will include the following:

1. A ground ring with grounding electrodes at building steel and building corners shall be installed for the new addition and connected via grounding electrode conductor. The grounding shall connect via grounding electrode conductor to the wall mounted ground bus in the main electrical room.

Each feeder and branch circuit will contain an equipment-grounding conductor in addition to phase and neutral conductors.

6.5. Lightning Protection System

A complete lightning protection system shall be provided for the new addition structure in full compliance with NFPA 780 and will include air terminals, main conductors, cross-run conductors, roof conductors, down conductors, ground rods and ground terminals. All lightning protection conductors will be concealed and be copper. An add alternate shall be included to provide a complete lightning protection system for the existing facility.



6.6. Wiring Methods

The minimum size wire for standard 120 Volt, 20 ampere circuits shall be #12 AWG. The minimum size wire for any special purpose receptacles shall be #10 AWG. All lighting and power circuits shall be provided with dedicated neutral. All wiring devices shall be hospital grade, tamper resistant type. Receptacles with integral 5mA ground fault protection shall be provided for devices within 6’ of sinks, restrooms, roof, wet locations, and kitchens. Special purpose receptacles shall be provided as required by the program. Dedicated circuits shall be provided where required by the load. The power distribution infrastructure shall limit voltage drop on feeders to 2 percent and voltage drop on branch circuits to 3 percent. Feeders and branch circuits shall be upsized as required. Normal indoor concealed or exposed feeders shall be provided in rigid steel conduit, IMC, or EMT with copper conductors; type THHN-THWN insulation. Conductors for the Isolation Power System shall be type XHHW or XHHW-2 Essential (Life Safety and Critical) indoor feeders shall be within a 2 hour rated enclosure or fire rated cable assembly (i.e. MI cable). Normal only branch circuits shall consist of insulated copper conductors in raceway and shall be provided as follows:

1. Concealed – Electrical Metallic Tubing (EMT) with copper conductors; type THWN-2 insulation; minimum size #12AWG conductors. Hospital-grade type AC cable with a full-size green grounding conductor; minimum size #12AWG conductors shall be permissible with written permission from local AHJ. If type AC cable is permitted all homeruns shall be run in EMT from the panelboard to a junction box in the room being served and AC cable run from the junction box to the devices. No horizontal runs of type AC shall be permitted.

2. Exposed – Rigid galvanized steel (RGS) with copper conductors; type THWN-2 insulation; minimum size #12AWG conductors.

Essential (Life Safety and Critical) branch circuits shall be provided as follows:

3. Concealed – Electrical Metallic Tubing (EMT) with copper conductors; type THWN-2 insulation; minimum size #12AWG conductors.

4. Exposed – Rigid galvanized steel (RGS) with copper conductors; type THWN-2 insulation; minimum size #12AWG conductors.

Branch circuits shall be provided as follows:

5. Lighting Branch Circuits – 20Amp 120V 1Ph 2W branch circuits shall serve no more than 1500 Watts of lighting load.

6. General Receptacle Branch Circuits – 20Amp 120V 1Ph 2W branch circuits shall serve no more than 1400 Watts of hospital grade receptacle load assuming 200 Watts per hospital grade receptacle.

7. Computer Receptacle Branch Circuits – 20Amp 120V 1Ph 2W branch circuits shall serve no more than 1200 Watts of receptacle load assuming 400 Watts per receptacle.

Mechanical control power shall be provided as follows:

1. One (1) dedicated 20Amp 120V 1Ph 2W branch circuit for every 2,500SF. Mechanical Equipment – A dedicated branch circuit shall be provided to accommodate the specific power requirements of each mechanical unit.



Fire Alarm – All fire alarm equipment shall be powered from the emergency (LS) system. Elevators – Elevators for general circulation shall be powered from the elevator distribution system fed from normal power only. Elevators dedicated to the OR’s and CSR shall be powered from the essential power system (equipment branch).

6.7. Lighting

Lighting shall ultimately be determined via coordinated effort between architects and engineer but the following are some basic lighting concepts:

1. Conference Rooms – Recessed mounted linear LED fixtures combined with LED down lights. 2. Corridor (Back of House) – Recessed 1’x4’, 2’x4’, or 2’x2’ LED fixtures with 0.125” acrylic

prismatic lenses and LED exit signs. 3. Corridor (Public) – Recessed, fully lensed, direct/indirect 1’x4’, 2’x4’, or 2’x2’ LED fixtures,

indirect LED lighting, and LED edge lit exit signs. 4. Lobby – Large diameter, pendant-mounted decorative LED fixtures and supplemental LED

down lights. 5. Waiting Rooms – LED downlights and LED wall sconces. 6. Toilet Rooms – Recessed LED cove along toilet/urinal wall supplemented by LED down

lights. 7. Stairwell – 18-24 inch diameter semi-recessed wall mounted LED fixture-two per landing-one

on each end and one between each landing. 8. Exam Rooms/Treatment Rooms/Offices/Workrooms – Recessed, fully lensed, direct/indirect

1’x4’, 2’x4’, or 1’x4’ LED fixtures, supplemented by LED recessed downlights. Under cabinet task lighting will be provided on the underside of cabinets.

9. Specialty Rooms – Each will receive LED lighting designed to best aid patient comfort and staff performance. Operating room LED lighting shall be asymmetrical operating room troffers meeting MilStd461 requirements.

10. Utility Rooms/Closets – 4 foot LED industrial pendants with 20% up-light and wire guards. 11. Illuminated Exit Signs – LED edge-lit type, except in “back-of house areas” where standard

white polycarbonate LED exit signs will be used. The majority of the lighting fixtures shall be LED, 120-volt. All lamps/LED’s shall be 3500°K, CRI 85 unless otherwise noted. Installed lighting and controls shall be in conformance with the lighting power allowance and requirements of State Energy Code and Efficiency Vermont. The lighting shall be selected to maximize the efficiency incentives. The lighting power density for Healthcare/Hospital occupancy type is 1.2W/ft2. In general, lighting shall be controlled by lighting relay panel(s) and local switches. Lighting in specific areas shall be controlled as follows:

1. Patient Rooms and Patient Occupied Areas – Light fixtures shall be controlled by local wall switches to allow for various levels of lighting for the patient and staff. The light fixtures shall also be controlled by a low-voltage bedside controller via the nurse call system

2. Multi-purpose/Conference Room – A lighting control system with multi-scene preset LED dimming control.

3. Corridor/Lobby/Waiting Rooms – Light fixtures will be controlled at two levels; the first level will include all of the emergency egress lighting (light lights) – the second level will include



switched corridor/lobby/waiting light fixtures. Emergency egress lighting will remain ON 24-hours a day, approximately every fourth or fifth light fixture and all exit signs. Switched corridor/lobby/waiting fixtures will be run through a lighting control panel and utilize an internal time clock to turn OFF and On all the common area lighting at a pre-determined time. The lighting control panels shall be daisy-chained together and utilize a low-voltage master light switch at each floor and a single master switch at the main entrance for security.

4. Toilet Rooms – Light fixtures shall be controlled by local wall switch with an integral occupancy sensor.

5. Nurse Station – Each light fixture type shall be controlled by independent switches to allow for user adjustment of lighting levels appropriate for the task and time of day; dimmer switches shall be used.

6. Exam Rooms/Offices/Workrooms – Light fixtures in these types of rooms shall be controlled via line-voltage switches and ceiling or wall-mounted occupancy sensors. Each room shall include dimmer switches to allow for adjustment of illumination levels. In the event the light fixtures are left ON the occupancy sensors shall shut the room down after a predetermined time period and turn ON the light fixtures when the room is re-occupied.

7. Stairwell – Stairwell lighting shall be ON 24-hours a day, and each stair shall include two separate independent branch circuits for redundancy. Stairwell fixtures shall be dimmable and incorporate occupancy sensors to reduce lighting levels by 50% when the stairs are not in use.

8. Physical therapy – A multiple level, switching arrangement to create at least two levels of lighting. Light fixtures shall be through a lighting control panel, which shall utilize an internal time clock to turn off and on all the lighting at a pre-determine times. The low voltage switches shall allow for override of panel controls.

9. Utility Rooms / Closets – Light fixtures shall be controlled by local wall switch with an integral occupancy sensor.

10. Exterior / Site Lighting – Light fixtures shall be controlled via the lighting control panel, lighting contactors, and photocell.

11. Operating Rooms/Procedure Rooms – Lighting control shall be coordinated by dimmable wall switches.

6.8. Fire Alarm System

A fully-addressable, non-coded, microprocessor-based fire alarm system will be provided throughout the addition, and renovation areas. The system shall be an extension of the existing Honeywell/Silent Knight fire alarm system. New fire alarm panels shall be provided as required to support the system additions. The existing fire alarm master box with 24hr red light, fire alarm beacon, and a knox box located on the building exterior near the main entrance, will remain. Fire alarm system shall be wired as a Class A system with two independent fire alarm loops/risers per floor; each loop/riser supply and return path shall be run in a one-hour fire rated enclosure for survivability. Wiring method for fire alarm conductors is type AC cable, minimum conductor size #14AWG. Manual pull stations shall be provided at each building and floor exit. Each pull station shall be provided with a clear polycarbonate vandal cover with an integral battery-powered audible alarm initiated by opening the cover. The sprinkler system shall be monitored via tamper and flow switches. If the tamper and flow switches are located in the ceiling behind an access panel then remote-indicating lights shall be required.



Smoke detectors with alarm verification shall be provided throughout the corridors. Standard type smoke detectors shall be provided in electrical closets and rooms, IT closets and rooms, lobbies, lounges and other common areas. Heat detectors shall be provided in the following areas - mechanical rooms, janitor’s closets, and central sterile equipment spaces. All mechanical air-handling systems over 2000cfm shall be provided with duct smoke detectors and remote test/reset stations that are programmed to automatically shut down the associated air-handling system. ADA approved speaker/strobe (75cd) units shall be provided throughout the corridors, in the stairwells and in common bathrooms. Higher candela level (110cd) speaker/strobe units shall be provided in large open areas, mechanical rooms and where required by NFPA and ADA. Strobe only units shall be provided in public and semi-private bathrooms. Strobes shall be synchronized throughout. Speaker/strobes in patient accessible areas shall be protected by tamper proof, non-looping design covers. Fault Isolator modules shall be provided in each SLC on the Class “A” system wiring as follows:

1. Between floors. 2. One (1) fault isolator module for every 18 to 20 addressable devices.

6.9. Master Clock System

New devices shall be provided as required in exam/treatment rooms, nurse/staff work areas, and common areas as defined by the Owner. New devices shall be battery powered, analog type as manufactured by Primex and capable of interfacing with the existing wireless clock system.

6.10. Nurse Call System

An audio-visual nurse call system shall be provided throughout the addition, and renovation areas, as required to suit the requirements of each space. The system shall be an extension of the new Tek-Tone system installed during the recent Emergency Department renovation project; and will be a networked system with programming to operate as discrete local system within each nursing suite. Operating room areas, PACU, ASU, Endo, and associated areas shall be provided with audio-visual devices and functions. Exam room suites on the second and third floors of the addition will utilize tone-visual devices and functions. Code blue stations and functions will be incorporated into the nurse call system. Typical devices such as staff assist/code blue stations, pull cord stations, patient bed stations with pillow speakers, patient stations with cord set, duty stations, dome lights, master stations and annunciators will be coordinated with user requirements.

6.11. Paging / Public Address System

Paging system and ceiling mounted speakers shall be installed in corridors, staff lounges, and waiting areas. Final locations of speakers shall be coordinated with the Architect and Owner. Paging system shall be an extension of the existing Bogen system currently serving the facility. New components shall be added to the system to accommodate the system additions Functions include, but are not limited to, the following:

1. Multi-Zone Operation: A switch or switches may be operated for selective connection of separate zones to different channel signals.

2. Selectability of sources for amplifying sound between various microphone outlets and other inputs.



3. All-Call Operation – A single switch may be used to make an announcement to all zones simultaneously, regardless of zone or channel switch settings. When switch is released, system returns to original operating mode.

4. Telephone Paging: Ability to use the all-call function by dialing an extension from any local telephone instrument and speaking into the telephone. The system returns to original operating mode when telephone is hung up.

5. Program Signal: Internal tone generator is activated by time-controlled dry contacts in a separate clock and program system device. Tone generator produces a tone that is amplified and sounded over all speakers, overriding signals currently being distributed.

6. High-Quality Sound Reproduction: Sound is free from noised, such as pops, clicks, hisses, and hums at all loudspeakers at all times during system operation including standby mode with inputs off. System output is free from distortion and nonuniform coverage of amplified sound.

The contractor shall be responsible for providing the infrastructure required for the installation of the paging system, speakers and wiring loop via empty conduit with pull strings, cable support, and back boxes.

6.12. Raceway Support System

The contractor shall be responsible for providing the infrastructure required for distribution of the following low voltage systems:

1. Voice 2. Data 3. Video 4. Security 5. Nurse Call

The infrastructure system includes empty conduits, wireways, pull strings, back boxes, recessed floor boxes and cable tray system. Provisions for device locations shall consist of a backbox at each location and a minimum 1” conduit run to within 6” of the cable tray. Tel/data and security wiring shall be included in the contractors scope of work; and be in accordance with the facility standards for these system. Cable tray shall be provided in all corridors back to the tele/data room. Cable tray shall be 12”x6” basket type tray, and shall be trapeze hung (not center-hung).


The following manufacturers are approved for the indicated equipment: 1. Electrical Distribution: Square D (Basis of Design), Cutler Hammer, Siemens 2. Conductors: Southwire, Senator Wire, Carol Cable, American Insulated Wire Corp,

Okonite, AFC, Allflex 3. Wiring Devices: Legrand-Pass & Seymour (BOD), Hubbell, Cooper 4. Device Wall Plates: Legrand-Pass & Seymour (BOD), Leviton, Hubbell 5. Fire Alarm: Silent Knight-Honeywell 6. Nurse Call: TekTone (Basis of Design), or approved equal 7. Lighting: Cooper Lighting, Axis Lighting, Lithonia Lighting 8. Cable Tray: Cooper B-Line, Cabofil, Wiremold

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